<div class="action">
    <div class="panel panel-danger">
        <div class="panel-heading">Panel heading without title</div>
        <div class="panel-body">
            11111
        </div>
    </div>
    <div class="panel panel-warning">
        <div class="panel-heading">Panel heading without title</div>
        <div class="panel-body">
            22222
        </div>
    </div>
    <div class="panel panel-success">
        <div class="panel-heading">Panel heading without title</div>
        <div class="panel-body">
            33333
        </div>
    </div>
</div>
